格子砖几何参数对蓄热室热交换能力的影响  

RESEARCH ON GAS FLOW PATTERN IN CHECKER BRICKS OF HOT STOVE

作　　者：张慧杰 陈川 Zhang Huijie;Chen Chuan(Zhongtian Iron and Steel Co.Ltd.Nantong 226000,China)

机构地区：[1]中天钢铁集团(南通)有限公司,南通226000

出　　处：《冶金信息导刊》2023年第6期32-35,31,共5页Metallurgical Information Review

摘　　要：增强格子砖和气体之间的热交换有利于提高风温,因此,如何提高蓄热室热交换能力是热风炉操作者普遍关注的问题。通过建立蓄热室格子砖二维传热模型,研究了格子砖几何参数对蓄热室热交换能力的影响。结果表明:蓄热室热交换能力和格子砖蓄热面积以及气体的换热系数有关,提高格子砖活面积后,换热面积增大,换热系数降低。虽然在整个送风期热风温度整体升高,但是升高幅度较小。缩小格孔直径可以同时提高换热面积和换热系数,格孔直径对风温的影响非常显著,在生产条件允许的前提下,为了提高风温,应尽量缩小格孔直径。Improving the heat transfer ability is beneficial to increase blast temperature.So how to improving the heat transfer ability has been a problem paid general attention to by most hot stove operators.In this paper a two-dimentional mathematical model is established and the influence of checker brick geometry on the heat transfer ability is studied.The results indicate that the heat transfer ability is associated with the heat air and convection coefficient.As increasing the void area,the heat area increased and the convection coefficient decreased.Although the hot air temperature increased,the increasing extent is small.Reducing the brick hole diameter can increase the heat area and convection coefficient.The influence of brick hole diameter on the hot air temperature is very remarkable.If the manufacture condition is allowed,the brick hole diameter should be reduced in order to increase hot air temperature.

关 键 词：格子砖 格孔直径 活面积 热交换能力 

分 类 号：TU8[建筑科学]